Self-Selection Patterns among Return Migrants: Mexico 1990-2010

This paper analyzes the self-selection patterns among Mexican return migrants during the period from 1990 to 2010. Using census data, we can identify return migrants who have lived in the United States within the previous 5 years but who currently live in Mexico. To calculate the selection patterns, we non parametrically estimate the counterfactual wages that the return migrants would have experienced had they never migrated by using the wage structure of non migrants. We find evidence that the selection patterns change over time toward negative selection. For example, in 1990, the wages that the male return migrants would have experienced had they not migrated was 6 percent larger than the wages of male non migrants. However, by 2010, the difference had declined to -14 percent. The increasing negativity of the degree of selection is robust to the analysis of specific subgroups: rural and urban, men and women, and states with high migration rates and low migration rates. Moreover, the negative selection results for the period from 2000 to 2010 are robust to the use of different surveys that define a return migrant by using distinct characteristics. Additionally, we observe that the wages of return migrants are larger than those that the migrants would have obtained had they not migrated. This finding shows that migration has a positive effect on the Mexican economy.Mexican migration, self-selection, return migration, wages

Bioremediation of a polycyclic aromatic hydrocarbons contaminated soil using an indigenous consortium

Polycyclic aromatic hydrocarbons (PAHs) include a group of organic priority pollutants of critical environmental and public health concern due to their toxic, genotoxic, mutagenic and carcinogenic properties. PAHs have been accumulated in the environment as a result of human activities. Bioremediation has become the most viable mechanism to reach the detoxification of contaminated sites. The objective of this study was to assess the capacity of an indigenous consortium enriched from an aged contaminated soil to biodegrade 16 PAHs, more concretely it was searched the complete removal of phenanthrene to CO2 and water.A PAHs degrading microbial consortium (OMC), isolated from a contaminated soil, was investigated for 16 PAHs biodegradation activity. The OMC consortium was able to biodegrade six of the 16 PAHs studied, reaching 100% for naphtalene acenaphthylene, acenaphthene, fluorine, phenanthrene, naphthalene, acenaphthylene, acenaphthene, anthracene and fluoranthene. However, 78.4 and 53.86 % were removed for anthracene and fluerenthrene respectively.Nine Strains were isolated from the OMC (PHE1,2,3,4,5,6,7,8,9). Isolated strains were tested to mineralise and in all cases the PHE concentration was drastically reduced. Once has been confirmed that indigenous bacteria were capable of degrading PAH and mineralising PHE were identified through 16S rDNA. Moreover, was proved the presence of genes including monooxygenase and dioxygenase by PCR amplification in the OMC and in the identified strains from the consortium. In OMC two of these genes were found: PAH RHDα GN and nahAC. However, in the isolated strains only one of the genes searched was identified: PAH RHDα GN, more specifically in Phe 8, Phe 4 and Phe 9.As result, it is shown that bacteria from a contaminated soil are active in biodegradation and mineralisation process, what makes the indigenous microbiota a powerful tool for bioremediation uses

Comparación y detección de patrones de movimiento en video

Ingeniero (a) ElectrónicoPregrad

Subjective Well-Being among Communities Left Behind by International Migrants

This article assesses the impact of international migration on the subjective well-being of communities of origin in Mexico. Using a representative national survey and an empirical strategy with instrumental variables, we find that higher migratory intensity, at the municipal level, increases life satisfaction among men and women. There is a negative effect on emotional states of women, but an improvement in emotional states of men. Without controlling for schooling, a variable affected by international migration, men have a lower satisfaction with their perspective of future. Overall, the evidence in Mexico shows that the effects of international migration in the communities of origin are complex and with differential effects based on gender

Occurrence of Endocrine Disruptor Chemicals in the Urban Water Cycle of Colombia

In developing countries such as Colombia, information on the occurrence of endocrine disruptors is still incipient. Bogotá, the capital of Colombia, has a complexity at an anthropogenic and environmental level that makes it particularly important to determine the possible presence of this type of compounds and the risks associated with its presence in aquatic environments. During the present study, the occurrence of endocrine disruptors, mainly pharmaceuticals, plasticizers, and hormones in different aquatic matrices including wastewater, surface water, runoff water, and drinking water was evaluated; the results show that phthalates present the highest occurrence followed by bisphenol A, with an important participation of carbamazepine (0.68–31.45 μg L−1), the most commonly found compound is bis(2-ethylhexyl) phthalate (BEHP). It was also found in the drinking water, this leads to the conclusion that endocrine disruptors in Colombia and Bogotá are a reality and deserve attention from researchers to deepen their potential sources of generation and control strategies, as well as the provision must start generating policies in this regard

Perspective of innovation policy and monitoring in the European Union 2010-2020

The following document glimpsed from a science, technology and innovation policy approach in the Europe Union, how as perceived from the European Commission as well the strategy is planned for the period 2010-2020 devoted exclusively to this topic, what tools and indicators were designed to control the execution of it, also describes important aspects of the most significant surveys of the European population on issues of innovation, giving interesting overtones of development and appreciation from this economic community; finally glimpsed comparative results between Member States and other countries key players in the global innovation arenaEl siguiente documento reseña la política científica, tecnológica y de innovación en la Unión Europea, desde la perspectiva de la Comisión Europea. Además, identifica la estrategia planeada para el periodo 2010-2020 dedicada exclusivamente a este tema, por medio de ella se precisa qué herramientas e indicadores han sido diseñados para el control de su ejecución. También en este artículo se describen aspectos importantes de las más relevantes encuestas realizadas a la población europea sobre temas de innovación, cuyos resultados dan visos interesantes de su desarrollo y apreciación de parte de esta comunidad económica. Finalmente, se señalan resultados comparativos entre los Estados miembros y otros países, actores principales de la innovación a nivel mundia

Creación de una empresa de servicios logisticos para eventos y catering, basada en ineamientos de innovación y servucción

Ingeniero (a) IndustrialPregrad

Creation of a complete horror level with its sound environment in Unreal Engine 4

Treball Final de Grau en Disseny i Desenvolupament de Videojocs. Codi: VJ1241. Curs acadèmic: 2016/2017A key point to the success of a game is the immersion that creates on the player through its environment, this refers to the playable levels and the soundtrack of the game [1]. Focusing on this matter is something very valuable for game makers. This Final Degree Project is about creating such engaging and explorable horror environment, as a demonstration of what can be done in a game without actually creating the whole game, but a demo. On this document, the demo will be referred to as a game. The main objective of this project is the creation of a complete and explorable 3D environment that creates tension and fear in whoever plays it. Specifically, it consists on a mountain which you are be able to explore and hear. It is set on night time, thus having the corresponding sounds of nocturnal animals and some added extras, that creates a tense atmosphere. This is entirely done on Unreal Engine